Updated upgrade file to add tasks column to the tickets table.
Updated database version.
Increase width of ticket properties form fields.
Remove margin from ticket property buttons.
Moved overlay form CSS to the forms file.
Added button to manage ticket tasks to the new ticket form.
Added ticket tasks manager route.
Added ticket tasks controller.
Added ticket tasks manager views.
Added CSS for ticket tasks manager overlay.
Updated the `data-overlay` attribute to take URLs.